| Author: | Cash, Frank E. |
|---|---|
| Year: | 1947 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7410 |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; 7410 |
| Subjects: | Iron mines and mining--Accidents--Wisconsin |
| Iron mines and mining--Accidents--Minnesota | |
| Iron mines and mining--Accidents--Michigan | |
| Link: | https://hdl.handle.net/2027/mdp.39015077577685 |